53421155 has 16 divisors (see below), whose sum is σ = 67453344. Its totient is φ = 40561920.

The previous prime is 53421139. The next prime is 53421163. The reversal of 53421155 is 55112435.

53421155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53421155 - 2⁴ = 53421139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4064 + ... + 11106.

It is an arithmetic number, because the mean of its divisors is an integer number (4215834).

Almost surely, 2^53421155 is an apocalyptic number.

53421155 is a deficient number, since it is larger than the sum of its proper divisors (14032189).

53421155 is a wasteful number, since it uses less digits than its factorization.

53421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7126.

The product of its digits is 3000, while the sum is 26.

The square root of 53421155 is about 7308.9776986936. The cubic root of 53421155 is about 376.6209066328.

The spelling of 53421155 in words is "fifty-three million, four hundred twenty-one thousand, one hundred fifty-five".